Sec. 300.304 (c) (1) (ii)

(ii) Are provided and administered in the child’s native language or other mode of communication and in the form most likely to yield accurate information on what the child knows and can do academically, developmentally, and functionally, unless it is clearly not feasible to so provide or administer;

(iii) Are used for the purposes for which the assessments or measures are valid and reliable;